The installation quality of spiral air duct manufacturers requires fire protection test. The installation of galvanized air duct is based on the fire protection test, according to the two index values u200bu200bof the shut-down work capacity within the required time and the ventilation volume of the total area of u200bu200bthe enterprise, to judge the fire protection work ability of the gate valve. In addition, according to the performance parameters of the commodity, its fire resistance rating is 3h. Installation quality regulations The galvanized steel sheet for air ducts is regularly inspected for fire safety during the completion and acceptance of the project. The editor found that the fire safety, smoke exhaust and fire dampers are insensitive to open or have common faults due to installation and construction quality problems. , smoke and fire dampers, and fire safety vents are difficult to calibrate. This should cause the construction unit to attach great importance to, pay attention to the following installation regulations. The smoke and fire dampers should be constructed strictly according to the drawings, and the anti-seismic brackets should be set up independently to prevent the ventilation ducts from being deformed at high temperatures and jeopardizing the function of the gate valve. When the gate valve is installed on the decoration ceiling or in the air duct, a maintenance access hole should be provided on the decoration ceiling plate or the inner wall of the air duct. Generally, the size of the entrance hole is not less than 450×450mm. 300×300mm. Galvanized air duct production The ventilation air duct between the smoke exhaust fire damper and the server firewall (or concrete floor) should be made of thick steel plate with δ ≥ 1.mm, and then externally apply refractory insulation material on the wind panel for thermal insulation or non-combustibility Material protection to ensure fire-resistant properties of the server firewall. 350mm of clean indoor space is required on the side of the actual operating mechanical equipment of the gate valve to facilitate maintenance. Fire safety, smoke exhaust and fire dampers have some problems in engineering projects. During the usual fire safety construction review and regular inspection of engineering projects, I found some problems with fire safety and smoke exhaust and fire dampers as follows. For the reference of the same industry.
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